Hose.



L. A. SUBERS.

HOSE.

APPLICATION FILED NOV- 3. l9l3.

Patented May 29, 1917.

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a citizen of the United IJAENGE A. S'UBERS, 0F CLEVELAND, OHIO.

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Specification of Letters Patent.

Patented May ea, 11am.

Application filed November 3, 1913. Serial No. 798,964.

To all whom it may concern.-

Be it known that I, LAWRENCE A. SU'BERS, States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Hose, of which I hereby declare the following to be a full,

clear, and exact description, such as will enable others shlled in the art to which it appertains to make and use the same.

The objects of the invention are to provide a pressure tubing or hose adapted to sustain high internal pressure with means for adapting it to make pressure tight connections at its ends, with a metallic nipple or coupling,

and also to so shape the interior surface of the hose that it can be sleeved over the nipple or coupling and conform itself to the surface thereof without disturbing or distorting-the and other pressure hose and tubing are providedlwith tapered outer ends adapted to it would a fibrous elements composing the body of the hose or subjecting them to such a strain that fi'ect the integrity and durability thereof." 7 Standard forms of railways, steam engineers and, others for coupling brake hose, signal and steam hose enter the open end'of the hose and with annular ribs or enlargements over which the hose is drawn and also with cylindrical portions beyond the annular enlargements upon which the extremities of'the hose are'securely clamped. v

It is at this coupling that defects in the hose first develop and the hose-primarily shows signs of wearandleakage.

'lln ordinary practice loom made fabric hose such as is composed of canvas layers embedded in rubber must be expanded to draw it over these annular enlargements, and since'such. hose are subject to longitudinal A shrinkage andlateral expansion when put underinternal pressure, and also are subject to a certain amount of twisting motion, this methodof coupling hose is productive of considerable movement upon the coupling and the elements and layers composing the fabric are stretched and distorted and-are not capable of long sustaining .the' pressure,

and the integrity of the fabric and life of the hose is materially reduced thereby. On the other. hand, if the hose is so cona as to nipples employed by v Patent No. 1,011,090 in expansion in any direction can be accurately.

f fabric and lessen structed as to be substantially free from expansion and contraction it cannot be forced over the annular enlargement on the nipple without distorting and injuring the fibrous layers comprising the hose, and the portion engaging the enlargement will become weakened and the hose will give out at this point. Elongation of the hose under pressure does not have a harmful effect since it will draw the hose more tightly over the nipple.

In the improved hose hereinafter described each coupling end is provided with an internal annular groove or recess of substantially the same diameter as that of the annular enlargement, and the internal diameter of the portion exterior to the groove is such grip firmly the cylindrical portion of the nipple.

The invention is hereinafter more fully described, illustrated in. the accompanying drawings and specifically pointed out in the claims.

several layers; Fig.2 is a longitudinal section showing anair brake coupling attached thereto; Fig. 3 is a transverse section thereof on line a2w Fig. 2.

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' In theseviews the hose His shown to coinprise a structure formed of laminated c0- hering fabric bands A, A according to the structure described-in my previously granted which the amount of controlled by means of the angle of'winding of the fibrous elements in each band, and also by means of the angle at which the bands are wound in the several layers.

.The outer layer L is composed of bands wound in a close spiral and forms the bind-' g layer forthe hose or tubing, and is only slightly expansible. The fabric la ers are covered inside and out by layers 0 rubber,

as in previously known forms of hose.

In this hose the amount of expansion laterally and longitudinally is exactly conpanded by pressure to fit upon the enlarged portion of the nipple withoutstraining the its eficiencyfor use.

To avoid this dficulty the hose is wound trolled in the manufacture and is reduced to A the minimum so that it'could not be exupon a mandrel of the proper diameter of the inner surface of the hose and upon which I of slightly greater internal diameter than an annular ridge or enlargement is formed similar to that upon the nipple, shown in Fig. 2 at E, which enters the corresponding annular recess E in the hose.

The cylindrical portion of the nipple F is also represented in this mandrel, and the inner surface of the hose conforms thereto at the outer end at F.

This cylindrical portion. of the nipple is that of the body of the hose and the internal diameter of the corresponding portion of the hose F is made of a diameter slightly smaller than the corresponding part of the nipple so as to fit tightly upon thenipple before the clamping device is attached. The

part F of the hose is, however, of an internal diameter somewhat greater than that of the main length .of the hose so that the enlargement E may pass into the position shown in Fig. '2 without stretching the part F of the hose beyond its elastic limit. The original internal diameter of the part F as compared with the remainder of the hose is shown in Fig. 1.

The extremlty B of the nipple is preferably tapered and is of substantially thesame diameter at the end as the internal diameter of the hose.

In this form of construction there is no strain put upon the wall of the annular recess when the hose is forced upon the nipple, and when internal pressure is applied to the hose the effect of the pressure by lateral expansion or twisting ,therein,

there will be no danger of the fabric breaking loose at this point and causinga leak.

The hose can be clamped upon the coupling or nipple Without disturbing the elements of the tube, lining and external wrapping.

The hose is designed to cling to thecylindrical part of the nipple of increased diameter and the tapered extremity of the nipple is preferably a close fit, thus affording no opening for the escape of air or fluid under pressure. The clamp C being at the rear of said enlargement does not reduce the strength of the hose, but tends to still further increase the pressure of the enlarged portion of the hose upon the enlarged portion of the nipple.

Having described the invention what I 1,227,coo

claim as new and desire to secure by Letters Patent is:

1. As an article of manufacture, a hose comprising a fabric body portion of predetermined length longitudinal and lateral expansibility having an annular groove adjacent to each end, that portion of the hose lying between each groove and the outer extremity of the hose, having a larger internal diameter than the internal diameter of the body of the hose.

2. In a rubbered fabric hose pipe a main body portion composed of substantially nonexpansible material and having a central opening of predetermined diameter and an integral extremity therefor having an opening of larger diameter, the opening in said extremity separated from the opening in said body portion by an annular groove.

3. In a hose a body portion having an opening of predetermined diameter, said hose formed of rubbered fabric of predetermined length expansibility and extremities therefor integrally connected therewith said extremities having openings of larger diameter and centrally located, the openings in said extremities separated from the opening in said body portion by annular.

grooves.

4:- In a hose, a body portion having an opening of predetermined diameter, said hose formed of rubber fabric having a predetermined minimum amount of lateral and longitudinal expansibility, and extremities therefor integrally connected therewith, said extremities having openings of larger diameter and centrally located with respect to the openings in said body portion, said extremities being separated from said body portion by annular grooves.

5. In a hose, a body portion having an opening of predetermined diameter, said hose being formed of rubber fabric having a predetermined minimum amount of lateral and longitudinal expansibility, and extremities therefor integrally connected therewith, said extremities being likewise of a minimum predetermined expansibility both laterally and longitudinally, said extremities having a cylindrical inner surface of slightly larger diameter than the opening through the body of the hose, and an inwardly projecting portion directly connecting said extremitles with said body portion, said last mentioned portion being adapted to reverse its position uponthe insertion of a nipple into the ends of the hose, thereby forming an internal recess or groove for the reception of an annular enlargement on the nipple.

6. In a hose, a body portion having an opening of predetermined diameter, said hose being formed of rubber fabric having a predetermined minimum amount of lateral and longitudinal expansibility, ex-

tremities for said body portion having an internal recess adapted to receive an annuinternal cylindrical surface of slightly lar enlargement on the end of a nipple. 10 larger diameter than the opening through In'testimony whereof, I hereunto set my the body portion, said extremities being likehand this 31st day of October 1913.

5 Wise of minimum predetermined lateral and LAWRENCE A. SUBERS.

longitudinal expansibility, and an annular In presence ofp portion integrally connecting said extremi- ERNEST MOSMAN, ties With the body portion for providing an ADAM MEYER. 

